Patent Application
20220061339
Holding and guiding device for cutting a portion of ham by hand and for cutting slices or fillets of other similar products.
The object of the present invention is a novel device that firmly holds a previously boned portion of ham and provides a guide for the knife so that a non-expert can cut thin slices by hand. The invention can also be used for slicing other meat products, such as jerky (cecina).
Currently, to cut an Iberian ham or pork butt by hand, a device generally known as a “ham holder” is normally used. This device generally requires the entire piece of ham arranged on it, forcing the non-expert user to handle a product that, by their morphology, their characteristics (especially fat), and weight, entails difficulties for easily filleting or slicing the ham (ham cut by hand).
There are several types of ham holders, although the most widespread ham holder consists of a structure normally made of wood that comprises a base at the ends of which there is a rear fixing element and a front fixing element. The rear fixing element is arranged on a post fixed to the base and consists mainly of a ring crossed by screws to fix the end of the ham or pork butt where the hoof is located. The front fixing element is directly connected to the base at the opposite end and consists mainly of a screw for fixing the thick end of the ham or pork butt.
There are other types of ham holders with relatively different configurations from those described, although they all only immobilize the ham or pork butt in a fixed position. That is to say, the current ham holders do not provide any help to the person who cuts the ham beyond holding the ham or pork butt piece. Therefore, to make an adequate cut, whoever cuts must control the thickness and dimensions of each slice by hand. As a consequence, to get a well-cut ham or pork butt, it is currently essential that the person who cuts the ham is an expert in cutting hams or pork butts. In addition, traditional ham holders are not designed to cut the ham by hand from the boneless product as a whole piece of ham is required for cutting, that is, on the product previously divided into pieces or portions. There are, therefore, no effective devices that facilitate hand cutting a boneless ham; that is, applying the cut by hand on portions or pieces of ham (previously deboned) to obtain thin slices of ham from such portions.
In view of this situation, there is a need in this field for a ham holder that, in addition to holding the ham or pork butt efficiently for cutting, facilitates cutting by hand into thin slices extracted from a portion or piece, previously boned, helping the person who cuts it.
The present invention solves the above problems thanks to a new ham holder design that not only holds a portion of the ham, but also provides guides for cutting each slice, so that the cutting of a ham or pork butt is made accessible to non-expert people. This device is suitable, above all, for holding pieces of boneless ham.
The clamping and guide device for cutting ham of the present invention basically comprises the following elements: a pair of vertical plates to hold the piece of ham; a means for tightening said plates; a horizontal platform to support the piece of ham; and a means of rotating a rod mechanically connected to the horizontal platform to allow its elevation. Each of these items is described in more detail below:
A) VERTICAL PLATES
It is a pair of parallel vertical plates slidingly connected through horizontal guides, so that they can move horizontally to get closer to or away from each other. As described in greater detail later in this document, this allows a piece of ham to be clamped between those plates due to the compression force. Furthermore, said first and second plates comprise a straight and smooth upper edge to allow the guiding of a knife. Therefore, when the piece of ham compressed between the two plates is arranged at a height such that a thin layer of ham protrudes above said upper edge, the user only has to horizontally move the knife guided by the upper edge of the plates themselves to cut a slice of ham.
The plates can be configured in a rigid or semi-rigid structure, both flat and in the form of a grid, mesh, or net.
The clamping means is configured to push the second vertical plate against the first vertical plate to hold a piece of ham arranged between the two. This makes it possible to compress ham pieces of different sizes.
The clamping means can be configured in different ways. A spring-based mechanism is used having a first end fixed to a lever arm that rotates about a horizontal axis fixed to the first plate and a second end attached to the second plate according to a preferred embodiment of the present invention. In this way, in a close position of the clamping means where the lever arm has a closing orientation, the spring exerts a force tending to bring the first plate and the second plate closer together, compressing the piece of ham between them. Alternatively, in an opening position of the clamping means where the lever arm has an open orientation, the spring does not exert any force on the first plate or the second plate, allowing their separation.
In another preferred embodiment of the invention, the second end of the spring is fixed to the second plate through a rod threaded to said second plate that allows the spring to be tensioned and released. Therefore, when the aforementioned threaded rod is threaded or unscrewed, the extension distance of the spring changes and therefore the compression force that it applies on the first and second plates changes.
The horizontal platform is arranged vertically movable between the first plate and second plate to provide lower support for the piece of ham so that it protrudes above the upper edge of the plates.
Specifically, this horizontal platform is connected to a vertically sliding frame that is engaged with a threaded vertical rod.
Preferably, the frame slides up and down along two vertical guides and is connected to the horizontal platform through horizontal arms that pass through vertical slots of the first vertical plate.
It is a rotation means of the threaded vertical rod, so that the rotation of said threaded vertical rod causes the horizontal platform to rise, and the elevation of the piece of ham with it as the ham is cut.
In a preferred embodiment of the invention, the rod rotation means comprises an electrical mechanism that causes the automatic rotation of said threaded vertical rod when a button is actuated.
In another preferred embodiment, the rod rotation means further comprises a manual mechanism comprising a lever fixed to a ratchet-type mechanism. In this way, when the lever is operated in a certain direction, it meshes with a ratchet wheel of the threaded vertical rod in such a way that it causes the rotation of said threaded vertical rod in the direction that causes the horizontal platform to rise, which thus rises a short distance. The lever then returns to its original position when moving in the opposite direction, although in this case without engaging the ratchet wheel of the threaded vertical rod and, therefore, not causing the horizontal platform to go up or down.
In a particularly preferred embodiment of the invention, the device further comprises a distance limiting system that establishes a minimum approach distance between the first plate and the second plate. This makes it possible to adjust the device of the invention for pieces of ham of different thicknesses. Moreover, the distance limiting system comprises a rotatable arm provided with several parallel projections arranged at its free end that is fixed to the first plate and a rod projecting from the second plate. Thus, to adjust the distance between the first plate and the second plate, the rod is inserted into a gap between a certain pair of parallel projections on the arm.
Due to this configuration, this device greatly facilitates the task of cutting a piece of ham into thin slices. The user only has to place the piece of ham internally leaning on the horizontal platform arranged between the first plate and the second plate. Then the clamping means are actuated to bring the plates closer to each other and thus compressing the piece of ham between those plates, immobilizing it. Specifically, when using a clamping means of the type described above, the user only has to rotate the lever arm from its opening orientation to its closing orientation, thus increasing the distance between the two ends of the spring and, consequently, a force tending to move the plates against each other. When the piece of ham is firmly held between the plates and resting on the platform, the user acts on the automatic or manual rotation means of the vertical threaded rod to raise the horizontal platform until a thin layer of ham is protruding above the upper edge of the first and second plates. In this situation, the user can rest a knife on the upper edge of the plates and move it as it is guided to cut a first slice of ham. Afterwards, the user acts again on the automatic or manual rotation means of the threaded vertical rod to raise the horizontal platform again a small distance so that a new slice of ham protrudes above the edge of the plates, and then cuts the slice by resting the knife on the upper edge of the plates. These steps are repeated indefinitely until the entire piece is sliced, with a thickness of the slicing or filleting to suit the user, who can determine with the electric or manual operation, the part of the ham that protrudes from the edge of the plates to be cut.
The edge of the plates serves as a guide to the knife, allowing a homogeneous cut of the thickness of the ham slice. In this way, the device allows the ham to be cut by hand on a piece or portion of it, with full efficiency and without the need to require a whole piece of ham.
Once completely sliced, or at any other time that is necessary, for example, to change the orientation of the portion intended to be cut, the user can disengage the rotating means from the threaded rod to which the horizontal platform is connected. This allows the horizontal platform to be lowered or raised freely in a rapid manner to a desired position.
An example of the device 1 according to the present invention is described below with reference to the attached figures.
The device 1 comprises a first vertical plate 2a and a second vertical plate 2b parallel to each other. These plates 2a, 2b have respective lateral edges to prevent accidental release of the piece of ham 100. The plates 2a, 2b are attached through a pair of horizontal guides 3 essentially formed by a horizontal pin 31 perpendicularly connected to the first plate 2a and which is inserted in a cylindrical hole 32 perpendicularly connected to the second plate 2b. In this way, plates 2a, 2b can move horizontally one perpendicular to the other so that they approach and move away.
A clamping means 4 is configured to bring the plates 2a, 2b closer to each other to hold the piece of ham 100 between them by compression. For this, the clamping means 4 is formed by a spring 41 having a first end 41a and a second end 41b. The first end 41 a is fixed to a movable part of a lever arm 42 that rotates around a horizontal axis 43 of the first plate 2a, so that said lever arm 42 can toggle between an open orientation and a close orientation. The second end 41b is fixed to a projection of the second plate 2b. When the lever arm 42 is in the open orientation, as shown in
The device 1 also comprises a horizontal platform 5 on which the piece of ham 100 rests. This platform 5 is connected to a frame 6 through three horizontal arms 62 that pass through respective vertical slots 63 made in the first vertical plate 2a. The frame 6, in turn, is vertically sliding along a pair of vertical guides 61 rigidly fixed to said first plate 2a. Furthermore, the frame 6 is engaged to a rotatable vertical threaded rod 7 fixed to the first plate 2a.
The rotation of the threaded rod 7 in a controlled manner to thereby transmit a corresponding vertical displacement to the horizontal platform 5 is performed using one of an automatic rotation means 8a and a manual rotation means 8b.
The automatic rotation means 8a may comprise an electric motor that drives a toothed wheel that meshes with the vertical threaded rod 7. In this way, when the user presses a button of the automatic rotation means 8a, the motor is activated a certain number of turns that, causes a small rotation of the rod 7 and, consequently, a certain rising distance of the horizontal platform 5.
The manual rotation means 8b comprises a lever fixed to a ratchet mechanism, so that when the lever is actuated in a certain direction it meshes with a ratchet wheel of the threaded vertical rod 7 in such a way as to cause the rotation of said threaded vertical rod 7 in a direction that causes the horizontal platform 5 to rise a small distance. The lever then returns to its original position when moving in the opposite direction, for example, thanks to the action of a spring, although in this case without engaging the ratchet wheel of the threaded vertical rod 7 and, therefore, without causing the horizontal platform 5 to rise or descent. Each complete stroke of the lever corresponds to a certain rising distance of the horizontal platform 5.
Thanks to this configuration, when the threaded rod 7 is rotated, either by the automatic rotation means 8a or the manual rotation means 8b, causes a vertical displacement of the frame 6, moving the platform 5 vertically upwards to raise the piece of ham 100 resting on the platform 5 to the desired position. The horizontal platform 5 vertical displacement distance will correspond to the thickness of the ham slice to be cut.
The device 1 further comprises a distance limiting system 10 between the first plate 2a and the second plate 2b. This system 10 allows adjusting the distance between the first plate 2a and the second plate 2b in order to adjust the device 1 to pieces of ham of different thicknesses. The distance limiting system 10 basically comprises a lever arm 10a and a fixing rod 10c. The lever arm 10a has one end hingedly fixed to the first plate 2a and an opposite end having parallel projections 10b, for example, projections similar to the teeth of a comb. The fixing rod 10c is rigidly fixed to the second plate 2b. In this way, a certain spacing distance between the first plate 2a and the second plate 2b can be set and then the lever arm 10a is rotated around the first end until the fixing rod 10c is engaged between two adjacent parallel projections 10b. The fixing rod 10c can be screwed to the second plate 2b, so that it can be pressed against said plate 2b until firmly immobilizing the two adjacent parallel projections 10b between which it is located.
In another preferred embodiment of the device 1, the threaded vertical rotation means 8 can be replicated in the same part of the device, forming two or more synchronized rotation means, if it is required more than one means of rotation due to a greater dimension of the device for example, for cutting large pieces of ham.
| Number | Date | Country | Kind |
|---|---|---|---|
| P 201930001 | Jan 2019 | ES | national |
| Filing Document | Filing Date | Country | Kind |
|---|---|---|---|
| PCT/ES2019/000075 | 12/30/2019 | WO | 00 |
